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<body><h1><a href="http://ejohn.org/blog/processingjs/">Processing.js</a></h1>
<h2>Sequential</h2>

<p>This code was updated from the Java source to work with Processing.js asynchronous image loading.</p>

<p>by <a href="http://www.presstube.com">James Patterson</a>.  

Displaying a sequence of images creates the illusion of motion. 
Twelve images are loaded and each is displayed individually in a loop.</p>

<p><a href="http://processing.org/learning/topics/sequential.html"><b>Original Processing.org Example:</b> Sequential</a><br>
<script type="application/processing">
int numFrames = 12;  // The number of frames in the animation
int frame = 0;
PImage[] images = new PImage[numFrames];
    
void setup()
{
  size(200, 200);
  frameRate(30);
  
  images[0]  = loadImage("data/PT_anim0000.gif");
  images[1]  = loadImage("data/PT_anim0001.gif"); 
  images[2]  = loadImage("data/PT_anim0002.gif");
  images[3]  = loadImage("data/PT_anim0003.gif"); 
  images[4]  = loadImage("data/PT_anim0004.gif");
  images[5]  = loadImage("data/PT_anim0005.gif"); 
  images[6]  = loadImage("data/PT_anim0006.gif");
  images[7]  = loadImage("data/PT_anim0007.gif"); 
  images[8]  = loadImage("data/PT_anim0008.gif");
  images[9]  = loadImage("data/PT_anim0009.gif"); 
  images[10] = loadImage("data/PT_anim0010.gif");
  images[11] = loadImage("data/PT_anim0011.gif"); 
  
  // If you don't want to load each image separately
  // and you know how many frames you have, you
  // can create the filenames as the program runs.
  // The nf() command does number formatting, which will
  // ensure that the number is (in this case) 4 digits.
  //for(int i=0; i<numFrames; i++) {
  //  String imageName = "PT_anim" + nf(i, 4) + ".gif";
  //  images[i] = loadImage(imageName);
  //}
} 
 
void draw() 
{ 
  frame = (frame+1)%numFrames;  // Use % to cycle through frames
  if( images[frame].loaded ){
    image(images[frame], 0, 0);
  }
}
</script><canvas width="200" height="200"></canvas></p>
<div style="height:0px;width:0px;overflow:hidden;"><img src='data/PT_anim0000.gif' id='PT_anim0000.gif'/><img src='data/PT_anim0001.gif' id='PT_anim0001.gif'/><img src='data/PT_anim0002.gif' id='PT_anim0002.gif'/><img src='data/PT_anim0003.gif' id='PT_anim0003.gif'/><img src='data/PT_anim0004.gif' id='PT_anim0004.gif'/><img src='data/PT_anim0005.gif' id='PT_anim0005.gif'/><img src='data/PT_anim0006.gif' id='PT_anim0006.gif'/><img src='data/PT_anim0007.gif' id='PT_anim0007.gif'/><img src='data/PT_anim0008.gif' id='PT_anim0008.gif'/><img src='data/PT_anim0009.gif' id='PT_anim0009.gif'/><img src='data/PT_anim0010.gif' id='PT_anim0010.gif'/><img src='data/PT_anim0011.gif' id='PT_anim0011.gif'/></div>

<pre><b>// All Examples Written by <a href="http://reas.com/">Casey Reas</a> and <a href="http://benfry.com/">Ben Fry</a>
// unless otherwise stated.</b>
int numFrames = 12;  // The number of frames in the animation
int frame = 0;
PImage[] images = new PImage[numFrames];
    
void setup()
{
  size(200, 200);
  frameRate(30);
  
  images[0]  = loadImage("PT_anim0000.gif");
  images[1]  = loadImage("PT_anim0001.gif"); 
  images[2]  = loadImage("PT_anim0002.gif");
  images[3]  = loadImage("PT_anim0003.gif"); 
  images[4]  = loadImage("PT_anim0004.gif");
  images[5]  = loadImage("PT_anim0005.gif"); 
  images[6]  = loadImage("PT_anim0006.gif");
  images[7]  = loadImage("PT_anim0007.gif"); 
  images[8]  = loadImage("PT_anim0008.gif");
  images[9]  = loadImage("PT_anim0009.gif"); 
  images[10] = loadImage("PT_anim0010.gif");
  images[11] = loadImage("PT_anim0011.gif"); 
  
  // If you don't want to load each image separately
  // and you know how many frames you have, you
  // can create the filenames as the program runs.
  // The nf() command does number formatting, which will
  // ensure that the number is (in this case) 4 digits.
  //for(int i=0; i&lt;numFrames; i++) {
  //  String imageName = "PT_anim" + nf(i, 4) + ".gif";
  //  images[i] = loadImage(imageName);
  //}
} 
 
void draw() 
{ 
  frame = (frame+1)%numFrames;  // Use % to cycle through frames
  if( images[frame].loaded ){
    image(images[frame], 0, 0);
  }
}
</pre>
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